Titan's Grave is a common Land card from Secrets of Strixhaven (SOS), collector number 266. Current market price: $0.24 (foil $0.20), TCGplayer market prices via Scryfall.
This land enters tapped. {T}: Add {B} or {G}. {2}{B}{G}, {T}: Surveil 1. (Look at the top card of your library. You may put it into your graveyard.)